matlab实现4个优先级的非强插优先级队列仿真，利用嵌套函数实现。仿真出排队延迟，等待延迟。-matlab implementation of four priority Override the priority queue simulation, the use of nested functions to achieve. The simulation of the queuing delay, wait for the delay.

用于排队系统的时延分析，可用于不同优先级队列和不同的服务时间-can be used to do the delay analysis of queuing systems